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·Effect of iron ions on pyrite flotation The role of iron ions in the flotation of pyrite by xanthate has not been studied thoroughly Since pyrite is composed of ferrous disulfide and suscep tible to oxidation when it is exposed to air and water the following stoichiometric reactions char acterize the oxidation of pyrite [21 ] FeS2 7/202
·Differential flotation of the iron sulfides Poling and Beattie 1984 pyrite pyrrhotite and arsenopyrite is a unique process in the gold industry There is scope on some gold mines for differential flotation of pyrite from arsenopyrite or vice versa Draskic et al 1984 Beattie et al 1992 Kogan et al 1986 This is due to the fact
·The paper is about the froth flotation process and its application It is a metallurgical process for the extraction of metals in a pure state from their ores especially for sulfide ores
·The results of pure mineral flotation indicated that the high altitude and low dissolved oxygen environment is favorable for pyrite flotation Contact angle measurements and XPS analysis showed that the high altitude atmosphere slows down the oxidation of pyrite surface facilitates S 2− /S0 production and enhances surface hydrophobicity
·To investigate the effects of FG on the flotation behaviors of chalcopyrite and pyrite micro flotation experiments were conducted in this study using an XFG mechanical agitation flotation machine equipped with a 40 mL Plexiglas cell operating at 1992 r/min Prior to each test 2 g of chalcopyrite/pyrite particles artificially mixed minerals
·The cell can be modified to handle high density slurries RCS flotation technology provides excellent air dispersion producing fine even sized bubbles Maximum flotation recovery and performance have been achieved by careful attention to the tank design RCSTM flotation machines are available in sizes 0 8 m3 to 600 m3 DV flotation mechanism
·The mechanical agitation flotation machine is one of the flotation machines that is invented at the earliest The early mechanical agitation flotation machine is designed with a complicated structure but a poor flotation effect Ganguo D 2005 Application of BF T flotation machine to upgrading iron concentrate [J] Min Metall 12 20 22
·This molybdenum flotation circuit based on 250 500 tons per 24 hours is designed for low grade molybdenum ore having high grade streaks and with pyrite quartz is also basically sound for many other friable sulphide ores such as antimony silver and even some lead ores The basic ideas stressed in this moly flotation flowsheet are the
·The flotation test of the cyanide pyrite was performed using an XFG flotation machine Changchun Jilin Province China The pulp density was set as 30% and high purity water was used as the flotation water The pH value of the suspension was adjusted by adding 1 M NaOH and M H 2 SO 4 solutions Sodium butyl xanthate SBX and terpenic
·To have a positive control over flotation it is necessary to be able to determine which and to what degree it is A cheap way to take this measurement LITMUS PAPER or a pH METER is used This is a very important measurement for the flotation operator Some minerals like Iron pyrite will not float well in an alkaline flotation circuit
·The ways to obtain successful Separation of Copper and Lead into individual Concentrates several process approaches can be examined; bulk copper lead flotation with a reverse flotation stage depressing copper the same bulk flotation with a reverse flotation to depress lead and a sequential copper lead zinc flotation circuit as well as a simple cleaning of
·The amount of ferric ions in the pulp produced by grinding with different media is quite different which has a considerable negative impact on pyrite flotation because of the formation of the ferric hydroxo complex The influences of ferric ions on the cumulative pyrite flotation recovery for different grinding media systems are shown in Fig 7
·Froth flotation of high iron marmatite particles activated by ammoniacal copper II solution has been studied in this work This study was performed on single marmatite mineral of 76 125 μm in size and 20% iron content by using results have shown that ammoniacal copper II solution effectively activated high iron marmatite particles in the
·Pyrite is a ubiquitous mineral in many ore deposits and sediments and its trace element composition is mainly controlled by temperature oxygen compositions of fluids and host rock composition A discriminant analysis DA based on multi element compositions of pyrite distinguishes iron oxide apatite IOA iron oxide copper gold IOCG
·The pyrite grade in the fresh tailing sample and in the flotation product was determined indirectly from the content sulfur copper and iron Calculations carried out considering the elemental chemical composition presented in Table 1 and the mineralogical species that contained sulfur identified by the XRD analysis allowed to determine that the fresh tailings
·Pyrite an iron disulfide is often associated with valuable minerals such as chalcopyrite galena sphalerite gold and cobalt During the flotation separation of multiple sulfide minerals the pyrite is often depressed as the gangue minerals Mu et al 2016 Whereas it is often floated as the froth products using xanthate as a collector during the gold and cobalt
·After the pulp and flotation reagent are fully mixed they are sent to the flotation column through the central feeding device The pulp is slowly descended under the action of gravity and the compressed air is dispersed into a large number of tiny bubbles through the inflator which are evenly distributed on the entire section of the column and rise slowly
·In both lead and zinc circuits pyrite is the main sulphide gangue mineral It is critical to decrease the presence of iron Fe and Zn in the lead concentrate during the flotation of galena
·Small scale fluidised bed flotation device for ore amenability testing I Verster B Awatey L Forbes A Morrison K Runge JKMRC Australia and M Mankosa Eriez Manufacturing Co USA Technical Session 2 Comparing Forced Air and Self Aspirated mechanical flotation machines S Merrill J Bowden and D Lelinski FLSmidth Inc USA
The flotation experiments were conducted using the same flotation machine to our previous study [26] 1 g of pyrite powders with a particle size of 75 μm ∼ 150 μm was poured into 40 mL flotation cell with 25 mL seawater being added subsequently After stirring at 1200 rpm the pulp pH was adjusted to and maintained during the firstly 6
·Free cyanide has been found deleterious to pyrite flotation Wang and Forssberg observed iron cyanide species formed after free cyanide interacting with pyrite [] Adams also found that free cyanide is able to reduce the surface hydrophobicity of pyrite by reacting with hydrophobic elemental sulfur or polysulfide to form hydrophilic thiocyanate [] as shown in
·The present paper introduces the key advantages of ImhoflotTM JamesonTM and RefluxTM flotation cells over the conventionally used mechanical and column cells from different perspectives